Method and form for concrete highway construction



B. H. FLYNN July 26, 1932.

METHOD AND FORM FOR CONCRETE HIGHWAY CONSTRUCTION Filed Feb. 5. 1930 Patented July 26, 1932 UNITED STATES" PATENT oFHcEfh BENJAMIN HARRISON FLY NN, OF LMARILLO, TEXAS METHOD AND romuv Eon cononm'n nrenwar cons'rnuc'rrou Application filed Febr ary 5, 1930. semi Nol'426,076.

In constructing concrete highways with advanced methods, heavyrails are laid along the right-of-way and anchored t-otheground,-

way finished on the previous day. Conse quently, these heavyfand cumbersome rail sections mean a great deal of expense for w purchase and further expense and trouble whenhauling'along the roadway and when moving equipment from one job to another. It is the objectof my invention to make unique provision whereby it is onlynecessary to have on hand substantially half the number of heavy rail sections, the others'being replaced by relatively light, inexpensive and easily handled forms. 7 9

With the foregoingin View, the invention resides in the novel subject matter hereinafter described and claimed, description being accomplished by reference to the accompanying drawing. j I

Fig. 1 is a perspective view showing a portion of the form against a portion of one of the track rails. i

Fig. 2 is a view showing'one of the form sections in horizontal section and illustrating the adjacent rail in top plan view.

7 Fig. 3 is a transverse sectional view on line 33 of Fig. 2.

Fig. 4: is a perspective view showing the connection between adjacent ends of form sections.

Fig. 5 is a diagram hereinafter explained.

In the drawing above briefly described, the

numerals 6 denote conventional, heavy,track- H forming rails which are ordinarily used also as forms between which to cast the concrete, said rails 6 being provided with stake sockets 7 to receive anchoring stakes 8 which are driven .into the ground. The numerals 9 have reference to horizontally elongated concrete form sections of much lighter-and less expensive construction j than the rails 6. Each form section 9 is pref erably formed from a metal channel sojthat' it embodies a vertical side wall 10 and flanges 11' and 12 projecting laterally from theupperi and lower edges of said wall. Between the ends of theflanges 11 and 12 and abutting the latteryare vertical struts 13 and 14're-' spect-ivelywhich maywell be formed fromlengths of angle iron rivetedor welded to the 9 wall 10. A similar strut 15 is shown between i the ends of the form section 9 and it will be understood that any desired number of such,

struts'could be provided for reinforcing purposes. The struts 13 and 14 'havenotcheslti and 17 formed in their upper ends, and 'a' short block 18 passes through the notch'-'16 and is secured by rivets 19 or other desired means to the flange 11. I The outer end of the.

block l8'projects beyond the strut 13 to pro- .vide a tongue, and this tongue of any section 9 is receivable in the notch 17 ofthe nxtad jacentsection.

At suitable points along the length of the .form section 9, stake sockets 20 are secured to the wall 10 between the flanges 11 and 12, said flanges having notches 21 and 22 at the upper and lower ends of said sockets, allowing anchoring stakes -23 to be driven through the latter. The upper ends of the sockets 20 terminate'belowthe flange 11 as seen in Fig. 3, allowing the upper end of the stakes 23 to occupy positions below the upper edge of the form section 9. Each of theseform sections is preferably of the same height as-the rails 6.

In carrying out one specificmethod in accordance with my invention, the rails .6 are laid. an anchored to a sufficient extent for a days run, as seen in diagram in Fig. 5. A

grading machine 24 is now, propelled along the rails to' prepare the grade, discharging the form. sections 9 are applied against the inner sides of the rails 6, behind said grader,

said forrns being anchored to the ground by air the stakes 23. A conventional paving ma chine 25 is propelled along the rails 6 and forms9' at a suitable distance behind the grader24: for the purpose of mixing the con fob n (is crete and discharging it between the forms 9. Another machine 26, or possibly a number oi. them, are propelled along the rails 6 and forms 9 behind the paver 25, to properly distribute and finish the concrete. As all of the equipment which must travel upon the tracks or rails 6, passes, these rails are removed from engagement with the forms 9, leaving the latter in place to retain the tinished concrete for the desired setting period. The removed rail sectionsare then re-laid and anchored in advance of the grader 2% in readiness for the latter to operate upon them. Itwill be seen that by thus transferring the heavy rail sections from points behind the equipment to points in advance. thereof and leaving the form sections 9 to hold the concrete, it is not necessary for the contractor to have on hand as many of said rail sections. Consequently, his investment in equipment is reduced and he is saved trouble and expense in hauling the rail sections alon a projectand in moving his outfit from one location to another.

If the grade is prepared by means other than the grader 2% operating upon the rails 6, these rails may be laid upon the prepared grade, the forms 9 secured in place against the inner sides of said rails, the pavcr Q5 advanced along track and forms, the concrete finished, and rail sections behind the equipment removed and re-laid and anchored in. front thereof.

It will be seen from the foregoing that the invention is of great advantage both as to structure and method. lrttention however may be invited to the fact that the various features herein disclosed may e considered as illustrative only, itbeing understood that numerous variations may be made within thescope of the invention as claimed.

I claim:

1. In concrete highway construction, the steps of laying and anchoring sectional parallel rails to form a track, positioning concrete forms atthe inner sides of said rails and anchoring said forms to the ground independently of said rails, propelling a paving machine along the track and finishing the concrete between the forms, removing the rail sections and leaving said forms anchored to the ground to retain the concrete during setting, and re-laying and anchoring the removed rail sections in advance of the paver.

2. In concrete highway construction, the steps of laying and anchoring parallel sectional rails, propelling work-performing machine upon said rails, positioning con- Crete forms at the inner sides of the rail sections behind the machine and anchoring said forms to the ground independently of said rails, removing the rail sections and leaving said forms anchored to the ground to retain the concrete during setting, and re-laying and anchoring the removed rail sections in advance of the machine.

3. In concrete highway construction, the

steps of laying and anchoring parallel sec tional rails, propelling a grader along said rails and grading between them, positioning concrete forms at the inner sides of the rail sections behind the grader and anchoring said forms to the ground independently of said rails, propelling a paving machine along said rails behind the grader and spreading the concrete between the anchored forms, removing the rail sections behind said paving machine and leaving said forms anchored to the ground to retain the concrete during setting, and re-laying and anchoring the removed rail sections in advance of the grader.

4-. In concrete highway construction, the steps of laying and anchoring parallel sectional rails, propelling a grader along said rails and grading between them, positioning concrete forms at the inner sides of the rail sections behind the grad-er and anchoring said forms to the ground independently of said rails, propelling a. paving machine along said rails behind the grader and spreading the concrete between the anchored forms, proyelling a concrete-finishing machine along said rails behind the paving machine, removing the rail sections behind said finishing inachine and leaving said forms anchored to the ground to retain the concrete during setting, and re-laying and anchoring the removed rail sections in advance of the grading machine.

5. In concrete highway construction, the steps of positioning concrete forms at the innor sides of equipment-supporting track rails, anchoring said forms to the ground independently of said rails, pouring concrete between said forms and removing the track rails, leaving said forms anchored to the ground to retain the concrete during setting.

6. Concrete highway construction equipment comprising sectional weight-supporting rails upon which to operate a machine, sectional concrete forms adapted to be placed at the inner sides of said rails, means for anchoring the rail sections to the ground, and independent means for anchoring said forms to the ground, whereby rail sections behind the machine may be transferred to positions in front of said machine, leaving said forms for concrete retention.

In testimony whereof I have hereunto a'tlixed my signature.

BENJAh HN HARRISON FLYNN. 

